Patent AU-2021105490-A4 (AU)
Title: Eco-friendly river training system for fluvial inland water bodies
Inventor: SHARMA NAYAN
IPC: E02B3/02
Filed: 2021-08-13
Granted: 2021-11-18
Abstract: The present invention generally relates to a cost-effective and simple river 
training system for a fluvial inland water body which is focused on use of 
locally available natural eco-friendly cheaper material along with ease of 
installation in a large alluvial river. As per literature, the river training 
system comprises a flow-training arrangement having plurality arrays of 
several submerged vane component members to be laid out along 
transverse and longitudinal directions of flow as per site-specific designs.  
Each array comprises required submerged vane component members 
transversely for effecting desired flow-training function. These arrays of 
submerged vanes component members are to be repeated in longitudinal 
direction at designed space intervals.  
As detailed in the literature, the underlying hydraulic principle of submerged 
vanes helps to modify the water flow pattern by generating secondary vortex 
currents to divert sediment carrying bottom flow layers outward to the 
eroded banks to induce sedimentation, while the clear water upper layers 
are deflected inward to the mid-stream to achieve channel deepening for 
required inland navigation fairway draught. In the present invention, the 
submerged vane structure is to be fabricated using naturally available 
bamboo/'balli' or wooden piles.  
These piles constituting the submerged vanes are arranged to stand vertical 
to the river bed and are installed in close contact with each other, even 
though hydraulically the submerged vane as a whole is not required to be 
water-tight or impervious, but not permitting active flow filaments to pass 
through the micro pore spaces between submerged vane 
bamboo/'balli'/wooden piles. The river training or erosion control system 
additionally comprises an installation means with simple water jetting or 
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using divers for embedding the flow-training arrangement into the river bed 
of the fluvial inland water body.  
The river training and/or erosion control system is installed along the 
channel cross section of the inland water body and makes an angle of 10
300 with the incoming water flow. Also, the height of the flow-training 
arrangement above the river bed varies from 20 to 40 percent of the total 
height of the maximum bankfull flow depth during floods as per site-specific 
designs.  
In contrast to manufactured high cost steel plated or concrete slabs 
submerged vanes used elsewhere, the submerged vanes in the present 
invention are made of cheaper natural Bamboo/'Balli'/Wooden pile material.  
These naturally available Bamboo/'Balli'/Wooden pile materials are to be 
implemented as cost-effective and eco-friendly river training measures that 
are logistically suitable for extensive river lengths for inland navigation 
channel development & maintenance, and also for stream bank erosion 
protection on a longer term sustainable basis.  
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100 
Flow-training arrangement 102 
Pluralityofmembers104 
Installationmeans106 
Waterjettingmeans108 
Figure 
A 
Flow 
am boo Wooden Pile 
A 
Plan 
Flow op 
Rver ed Level 
Longitudinal Elevadon atA-A 
Figure